Emulator allows functions to be reprogrammed 'on the fly'20 November 2002, Electronics Technology

Hitachi is offering a powerful tool for most debugging needs that allows emulator functions to be reprogrammed during use. This allows it to offer many new features that have not been available before, including enhanced breakpoints and PinView/PinSet. The use of FPGAs in Hitachi's Compact Emulator also enables new features to be easily added electronically in the future, for example as a download.

The PinView/PinSet feature on the new emulator allows a device's I/O pins to be viewed and stimulated before the user's hardware is available. At any time, users can both toggle an I/O pin from the keyboard and read the set value of the pin. The Compact Emulator is integrated into the Hitachi Debugging Interface (HDI) Version 5 front-end, giving the developer seamless access to its advanced debugging capabilities. The tool does not require an internal interface card to communicate with the host machine as it uses the USB port now shipped as standard on most PCs.

The Compact Emulator hardware is modular. A minimum base unit offers conventional debug functionality including limited realtime trace. Enhancement modules can be added as required and include a 65 000 cycle enhanced realtime trace buffer. The modular approach of the tool allows users to decide which extra debug functions they require in addition to the standard base functions, for example the trace board module, which is available now. The tool is shipped in two forms, standard and with the trace board fitted.

The first version, the CE2148R, has been released to support the H8S/2148F series of 16-bit microcontrollers, which includes over 30 different devices in a variety of package and memory sizes. Members of the series have a variety of 8 and 16-bit timers, on-chip watchdog timers, up to five serial interfaces, up to 24 channels of A/D and up to 82 I/O pins.

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